The function of control rods in nuclear plants is to__________________?
(A) control temperature
(B) control readioactive pollution
(C) control absorption of neutron
(D) control fuel consumption
(D) none of the above
Which of the following can be used as a coolant in nuclear plant________________?
(A) light or heavy water
(B) molten lead
(C) carbon dioxide
(D) freon
(D) carbon tetrachloride
A fission chain reaction in uranium can be developed by________________?
(A) slowing down fast neutrons so that Uz fission continues by slow motion neutrons
(B) accelerating fast neutrons
(C) absorbing all neutrons
(D) using moderator
(D) enriching U235
In order to have constant clain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be________________?
(A) greater than 1.0
(B) less than 1.0
(C) equal to zero
(D) equal to 1.0
(D) equal to infinity
The following present serious difficulty in designing reactor shield_________________?
(A) alpha particles
(B) beta particles
(C) thermal neutrons
(D) fast neutrons and gamma rays
(D) none of the above
In a fission process, maximum %age of energy is released as___________________?
(A) kinetic energy of neutrons
(B) kinetic energy of fission products
(C) instantaneous release of gamma rays
(D) gradual readioactive decay of fission products
(D) none of the above
In triggering fission, the following types of neutrons are desirable_________________?
(A) fast moving
(B) slow moving
(C) critical neutrons
(D) neutrons at rest
(D) none of the above
Which of the following is more appropriate for a moderator. One which_________________?
(A) does not absorb neutrons
(B) absorbs neutrons
(C) accelerates neutrons
(D) eats up neutrons
(D) regenerates neutrons
Solid- fuel for nuclear reactions may be fabricated into various small shapes such as___________________?
(A) plates
(B) pallets
(C) pins
(D) any one of the above
(D) none of the above